Physical or Chemical Change-A Rusting Bicycle
Chemical Change
Which state of matter has a definite shape and a definite volume?
Solid
If the tops were removed from the cylinders what would happen?
The gas would fly out of the container
Fred has an apple with a mass of 50g. He peels and cores it and then cuts it into 10 slices. If he puts all the slices the core and the peel back on the balance scale what is its mass now?
50g
A class is playing tug of war. One side is pulling with 20N of force the other side is pulling with 20 N of force. What is the net force?
0N- it is balanced
Water vapor condenses because it
Cools
When you add heat to water as a solid you get
liquid
Physical or Chemical Change-Rotting Apples
Chemical Change
Can matter change from one state to another without changing its chemical composition?
Yes-Water can!
What is anything that takes up space and has mass?
Matter
A liquid turning into a gas is called
evaporation
Which state of matter has a definite volume but an indefinite shape?
Liquid
Lightning is an example of a...
Plasma
After condensation, if a cloud gets to heavy it
Precipitates
What does this picture represent?
Solid
Name the 4 forms of precipitation
Rain, Sleet, Snow and Hail
John has a 100 mL container of water. To that he adds marbles which raise the volume to 150 mL. What is the volume of the marbles?
50mL
The water cycle is powered by
the sun
What are the three basic states of matter?
solid, liquid and gas
What does this picture represent?
Liquid
A push or a pull on an object.
Force
Water evaporates because it
Heats up
When a plant releases water into the atmosphere
transpiration
The amount of matter in an object?
mass
Speed plus direction is...
velocity
A change in position over time is..
motion
The speed of molecules determines the
temperature
What is the speed of a car that traveled 100 miles in 2 hours?
50 m/hr
Any form of water that falls from the clouds to Earth
Precipitation
Physical or Chemical Change-Tearing Paper
Physical Change
A pig has a mass of 200g and a volume of 100mL. What is the pigs density?
2 g/mL
What happens to particles of matter when I add heat?
The particles get faster
If an object has particles that are moving very slowly, the object's temperature is probably
cold
Bouncing a ball on the ground and having it bounce back is an example of which of Newton's Laws?
3rd- every action has an equal but opposite reaction
When you freeze water as a liquid you get
a solid
After water precipitates one of two things happen to it, those are...
Runoff or Groundwater
When water collects in a river, a lake, a pond or an ocean we call this
collection
All changes in the state of matter of a substance requires
Energy
Physical or Chemical Change-A Rusting Bicycle
Chemical Change
Water that soaks into the ground is called
groundwater
A gas turning into a liquid is called
condensation
Milk and gelatin (Jello) are examples of
Colloids
Name the 4 main parts of the water cycle
Evaporation, Condensation, Precipitation and Runoff
Which state of matter has an indefinite shape and an indefinite volume?
gas
What does this picture represent?
Gas
What are three indicators of a chemical change?
fizzing, change in odor, change in color, change in temperature
How much force is needed to move a 500 kg elephant at 2 m/s/s?
1000 N
The steam coming off the pot of boiling water is an example of....
a liquid becoming a gas
What is Newton's 1st Law?
An object at rest will stay at rest and an object in motion will stay in motion unless acted on by an unbalanced force.
What is the force that pulls all things down toward earth.
Gravity
A change in speed and direction is..
acceleration
When liquid changes to a solid it is called the _______ point.
Freezing
Physical or Chemical Change-Fireworks Exploding
Chemical Change
What is the force that slows down or stops the motion of an object? It is the opposing force.
Friction